Fill in the blanks: The coronary arteries are the first branches off the____. The right coronary artery becomes the____on the posterior side of the heart. The left coronary artery branches into the_____and the_______.

Video transcript

Hi, everyone. Let's take a look at this practice problem together. A myocardial infarction is caused by a blockage of which blood vessel. The answer options are a subclavian artery, B, pulmonary artery, C, coronary artery, and D the carotid artery. So recall that a myocardial infarction is also known as a heart attack. During a heart attack, blood flow to the heart is decreased or completely stopped due to a blockage. So which of our answer options is a blood vessel that supplies blood to the heart. Option. A the subclavian artery recall that it is located below the clavicle and it supplies blood to the upper extremities, the neck and the head. So option A is incorrect. Option B, the pulmonary artery. Remember that pulmonary means lungs. So the pulmonary artery supplies blood to the lungs. Option B is also incorrect. Option D carotid artery recall that this is an important blood vessel that supplies blood to the brain. Now, a blockage in this artery is known as a stroke. So option D is also incorrect. The correct answer is the coronary artery. This is a major blood vessel that supplies blood to the heart tissue itself. So the correct answer is option C coronary artery. All right. Everyone. I hope you found this helpful and I'll see you soon for the next practice problem.